Adding-machine.



M. BAUM & J. WIMMBR.

, ADDING MACHINE.

APPLICATION FILED DEG.7,1911. 1,095,545.

2 SHEETS-SHEET 1.

Panted May 5, 1914.

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M. BAUM dz J. WIMMER. ADDING MACHINE.

APPLIOATION FILED DBO. 7, 1911A 1,095,545.

Patented May 5, 1914.

2 SHEETS-SHEET 2.

Unirse STATES MICHEL RAUM PATENT OFFRE.

ANB osier WIMMER, Vor MUNICH, GERMANY; SAID WIMMER ASSIGNOR TQ SAIT.) BAUM.

roeifiets.

ing;r at Munich. Bavaria. Germany. have iny vented certain new and useful Improveinents in Adding-'lacliines; und we do herehy declare the following' to be. a full, clear,

vand exact description ot the invention, such Y as will enable others skilled in the art 'to which it appertains to make saine.

The object of the present invention is airl adding machine with horizontally arranged number disks.

The structure of an adding machine made according to our invention is such as to enahle the same to occupy a restricted space and to gire the same the shape of :i rulerund use the lil-:e hotly. The device thus constructed mayY f he manufactured cheaply and may he manipuhited with facility. By this addinguiachine all the calculating operations take place in a plane, as the yadding.,y disks also serve as driving wheels for the intermei diate gears. The intermediate wheels are each provided with a slit in one of their teeth, in whit-hva transmitting slide is ar! ranged which is situated in the same plane with the driving addintgr disk. The transmittingslide may passthedriving gear when ,moved toward the axis of the intermediate 'licel. This motion is effected 'n y an eecentrir. which is arranged at the surface of the intermediate wheel. rl`he transmittingslide. when moved outwardT engages the heads of the teeth of the adding wheel.; there heads ol' the teeth are formed with notches in which enters the outer end of the trans:- iuittiiigr slide. 'l`lierefore the latter acts as a prolongation of that tooth of the inter# mediate wheel in which it is arranged. The withdrawal of this` prolongation is effected lay the eccentric of the intermediate wheel.

further feature ot' the invention involves a locking mechanism for the. adding wheels with a'coinpouud lockiii; r device. etween 'the two levers constituting the locking dcvice a spiral spring?Y is arranged. the levers lieinf: pivoted iii the manner of a pair of shears having; a limited movement; To avoid the pressure of. hd Vcking device dur ing the tr:\1.-sniittiii of the tensv a special pivot is provided and the ont-part of the locking device bears against the circumference of a ring! borne by the intermediate Spectcatton of Letters Patent. Application med `eeeinber 7, A1911.

Paten feti may 5, 191 4. serial No. 684,365.

wheel. end of the one part of the blocking lever enters whereby the`device is released from the pressure of the. spiral spring which serves to spread the levers. t

Another object of the invention is to rvide a limitin` surface: for the pin which serves to revolve the adding disks, So that the latter are released from any pressure and to prevent that the adding pin is driven too far`in the disks. This is performed by an intermedi-ate plate Whichsimultaneously This ring has a recess, in which the Y protects the transmitting gearsand blocking levers lying under it. v This invention.A relates also to oontroldevicesI which make .it possible. to read the added number before a newjaddition is made;

" For this purpose controlling-disks are arranged eoaxially over the adding disks. 'I he controlling-disks' are provided with a seniicircular aperture and with thcfigures V0 to 9J Beside the iiuinhers are holes for inserting-the adding pin between the gaps of the teeth of the adding disks to turn the latter together with the 'controllingv disks. .\t the circumference of the controlling disks ratchet teeth are arranged in which plate springsenter to-hold the controlling disks in each iosition. The release of the Controlling isks is e'ected by a lever adapted to turn a spindle provided with pins, the latter drawingr the spring'platcs out of enA gageinent with the ratchet teeth and, thus t0 permit the eontrollingdisks to turn hack Ato fll'eiroriginal position.

A further iml'irovcmcnt consists in the de-` vice for hringinr the adding diskstto the zero position. l4 or this purpose a rack-bar is used which may betilted. This rackbar is slidahly arranged in a groove of the casing of the adding-machine and meshesA with tho addiinf wheels when tilted upward. Ho

h i I that; the latter. when the rack-liar is longe tudiiiallv moved. are turned hack into the original position.

["iiiallvthis invention relates to the con4 .struction of'tlie casinir and it\ cover-plate. whereby the inani'ifacture of tlnl whole machine is facilitated and cheapened. The hottom of the casing is pressed upward or embossed to torm two steps and provided with ribs. by which 'not only the easing is titl'- cned hut also supports for the adding m ch- :inism are formed. The coverfplate. is pevided with semi-circuh'ir aprtures; at the bers are for controlling. 'Flic-aperture of 4short'edges and at the long edges, the lathead of Ythese apertures are holes through which the added numbers of the adding disks are visible andA atthe foot of these apertures are-holes through which the corresponding numbers of the controlling disks are made visible. The cover-plate is ben't down at its ter being bent in semi-circular form, and adapted to engage longitudinal notches of the casing, 'in which a fasteriing wire may be arranged. 4

In the accompanying drawingFigures 1 and 2 are 'top plan views of device embodying' our invention, parts of the top and in. termediate part-s being broken away to show all of the operative parts; Fig. 3 represents a vertical transverse section on an en larged scale, on a plane passing through -the axis ofone of the adding-wheels, the locking device being :removed for vthe sake. of clearness; Fig. 4 represents a similar section on a plane in front of the device for releasing the controlling'disks; Fig. 5. represents a similar section on a plane passing through the fulcrum of one of the 'locking devices, the adding-wheels and vcontrolling disks being omitted, and the cover plate lifted. out of position.' Fig. G represents a detail viewof the device for transmitting tens on an eni larged scale; Fig. 7 represents a plan view and a diamctrical section of a controlling disk in its actual size; Fig. 8 a side elevation i of the.adding pin employed in vconnection i with the device, andFig. 9 a detail perspective view of the rack-bar and'aecessory. parts.

The. cover plate 1 ofthe machine is provided witli semicirculiir apertures 2 jthrough 'i whiclitheadding pin, shown-in Fig. S, may be inserted into' the holes of the controlling` disks 'I and adding wheels 13.,l The added. numbers are visible through thc Aapertures 3 of the cover plate and the control numbers through the apertures 4. 1n Fig. 1 the number 46 is to be seen through the` two tirst apertures 3 and 4; the Aupper numbers are the. result of theadditiointhe 'under 'nurnthe cover plate 1 "serves to'obtain the zerol position of the adding wheels 3 in which position the zeros appear' throngithc apertures. F or obtaining the zero position of the controllingdisk 7 the' button lever 6 is used. The adding disks 13 are provided with number .rings 14 which are marked with a double series of tignrcsj from V0 to 9. The controlling disks 7 bear the Iigl iii-es 0 to Si and cover one half of the` adding wheels. .\t the side of every figiire 0 to 9 of the controlling. disk is a hole 8 which corresponds with each gap between the teei 'ofi face transmitting slides ll arranged in .snitable recesses which are covered by plates 10, The further details of these transmitting slides will be described later on. The adding wheels 13 are placed on the intermediate plate 17 and the intermediate wheels 9 and blocking levers 18,' 19 beneath it. The intermediate wheels 9 are provided with ringsV 12 .with aperturesl 33. of the locking device'lies over the lever if); besides these levers a stop levei 20 is ar# ranged which may be actuated by the lever part 19 'so that itdoes not engage the` wheel 9. Fig. 2 shows the manner in. 'which the /stop lever 2O Vunder the influence' of the spring 21 engages the.internwdiatc wheel 9 and prevents the latter from turning more than the amount of one tooth. The interv mediate wheelsil have, as will he seen in F 2,`at the right' oncshortened tooth at' the lower portion which serves to obtain the zero position of these wheels and of the adding wheels 13.

The bottom of Athe casingil visproviiled with ribs 22 and 23 which latter supportthe intermediate plate 17.'v T lie-ribs 22 ser-ve for bearing the wheels 9-and levers 18and 19. 'l`lic'coverplate1 is provided wit ,flanges 25 bent over seini-circularly whie i,v engage grooves 26 of the casing 2l. Ono/'ofl these grooves has a circular part 2Gwhieh serves for the reception of a fastening wire 2T (Figs. iis-5). The 4two other [langes of the llicover plate are straight, thus rendering it possible tir-"readily lift and remove the cover plate. f A 4 lhe adding wheels ll which -iossess :'30,- tecth eachform the driving gear or the 'ini tei-mediate wheels 9 which pdssess 10 teeth nach. the gaps between which are rounded at their bases as Shown at 132, l1`ig.6and-serve for putting in the adding pin'in order to turn the' adding disks and controlling disks. The number rings H which carry-two series of lhegfignres from 0 to S) are of suitable ninterial and are provided with an inner aperture which is larger in diameter than the arbor-.LS so that a sunken annular 'chamber l 'il (Figs. 1, 3 and (i) is formed which takes up a corresponding hub of the controlling disk T.' 'lhe adding wheels 1? drive, as already mentioned, the intermediate wheels gearing therewith and are on theothcr hand vdiven by vtlzese.intermediate Wheels by;

iii-ans of the transmittin'g` slides 11.5' The intermediate wheels are 'driven by the teeth The lever 18 proper of the .adding wheels '13 while the transmitting slide does not lgear directly into these teeth. but in the'notches 1n the rsaine. 1 For :in adding machine these head the adding disk. .These holes permit the lportions of the iet-th have the formshown insertion of the adding pin between thc lin Fig. (3; thc rear portion of the ieethcis gaps-ofthetecthot the adding. disks, to turn @somewhat shorter than the front portion.

the latter together with the controlling disks. l

lf the machine is destined to serve for addr The intermediate wheelsicarry on their surf ing and subtracting, both portions must be effected by Y consists of a transmitting slides are a 'spring of equal length. The transmitting slide 11 bolt with annular hub and is 11' eocentrically 'fixed on the intermediate wheel 9 a mannery that it is moved forward beyond the teeth of the intermediate wheel 9 to engage the teeth of the adding whe-e113 which is to' he driven, while at other times it is drawn baek so that the in` termediate wheel 9 may be driven by the preceding adding wheel 13 without interfev-mire.y in order to arrange the adding: wheels, the intermediate wheels and the transmitting slides in one plane, the transmitting slides are ar ged within the intermediate wheels in recesses Z8 so that the adding wheels, intermediate wheels and the t equal heights. The tooth of the intermediate wheel 9 which is provided with the transmitting slide 11, must he slotted in a radial direction.- As the axis of the huh of the transmitting slide is ecrentriral, the slot of the tooth must be of corresponding width or wedge-shaped. lt is preferable, however. to substitute for the upper part. of this tooth a slotted steel pin 29 Fig, 6) which is swiveled on the lower part of this tooth. Under this arrangement, if an adding wheel is turned for the amount corresponding to the figures 0 to 9, that is to say, rotated 180, the intermediate wheel 9 meshing therewith makes a complete ro tation, turnin 360 and the transmitting slide advance during this time engages the head of a tooth of the following adding Wheel 13 and turns the latter atooth forward. The transmittingv slide 11 therefore elects the well Vlinown' transmitting of the tens.

The blocking levers' 18, 19 are, as already mentioned, arranged in such a manner that the intermediate wheels 9 remain free from pressure during the transmission which is the action of the spring 19 and the lever 18. To obtain this release the levers 18 and 19 (Figs. Q and 5) are-m'ranged on the same fulcrum 4Q: the vlever 1S which lies over the lever 19 does not turn directly around the nlcrunrl'Z hut around the hub 30 of the lever 19 (Figs. '2 and 5). The spiral sp1-ing 19 arranged between the rear arms of the levers 18 and 19 holds-the other ends of the levers separated like the two arms ofa pair of scissors. ln order to limit the distanfce between these ends, the. lever lill carries a stop in form of a small eccentric plate 31, which permits the adjustment of l the opening between these arms. The spiral l I 19 canonlyv exercise a pressure on the huh 3() and the ecntrie plate 31, hut not on the arbor Q8 or on the easing of thel add.v ing machine. The levers 18 and 19 turni readily on the fulcrum 4Q and ma y he removed z or lifted out together. To h ring the lever 18 v into action, the end of the lever 19 must rev guided hy a plate the fixed axis of (Fig. f3) in such -a recess 33 (Figsf 1 and ceive a support. For this purpose the ring 12 of the intermediate wheel 9 is provided. Against this ring rests the steel pin 32, fixed at the end of the lever 19 (Figs. 1.I 2 and 5). To press together the-front ends of the levers 18 and 19, the lever 19 must be'turneda'side, and the full resistance of the spiral spring 19' must be overcome. This pressing together of the two levers takes place, when the intermediate wheel 9 is turned by the adding wheel 13. The lever 1 8 always insures the same relative position of the engaging teeth of the intermediate wheel and the corresponding adding wheel. If, at the same time,'several transmissions mustbe made, the corresponding numher of levers 18 must he put under tension` for which purpose considerable power is necessary. If the levers 18 have not the necessary support, their tension is not possible and the transmission can be made without considerable pressure. For thisI purpose each ringlQ is provided with 2) at that portion which would contact with the pi 32 vof lever 19 durin the transmission. f y this arrangement t e lever 19 may be moved aside without resistance fromV the intermediate wheel 9 (Fig. 2,Y l1th intermediate wheel) and the transmission, released from the pressure of the lever 19, may easily be made. The inclined edge of the ring 12.at the one end of the notch 33 brings back the lever 19 in its original position. To avoid thatthe easily nmovable adding wheels and intermediate wheels tnr more than for the amount of one `tooth during the. transmission, which would'cause mistakes in calculating, the stop lever 20, under the influence of the spiral springQl, engages the teeth of the `oorresponding intermediate wheel 9. The arm 214 of the lever 19 however prevents the stop lever 2O from gearing with wheel 9. if a transmission does not take place. ln the'easc of a transmission the levers 18 and 19 move together toward the right hand and the arm 24 comes down for a corresponding amount, and releases the stop lever '20. The spiral sprin Q1 brings the latter into engagement with the teeth of the tnrninf intermediate wheel 9 and sto sit-.till the over 1*.) goes hack into its original position and removes with its arm 34 the stop lever 20 from the intermediate wheel 9. This remoral takes place only at the last moment, when thc transmitting slide l1 has left the teeth of the adding'wlieel 13 and the lever lF 'has nearly completed itsreturn movement.

plate 17 renders it 4possible toset the adding disks 13v looselyr on the fixed arhors QR. To diminish -the friction between the adding disks 13 and the intermediate platel?, the latter is provided with three. small rihs' for each wheel Which'serve as supporting points.

The arrangement of the intermediate' l. Q on. the under side llpin the position shown in Fig. 3 by The intermediate. plate may consist of one or several pieces and is supported by the rib 23` placed removablyin a notch at the bottoml of the casing and may be longitudinally moved beyond the intermediate wheels without. engaging them. The. longitudinal lrib t the rack ba'r 16.- is guided b r several pins l5" and may be tilted broken lines. l Tn this position the. rack bar 15 meshes'with the intermediate wheels 9 and brings the latter back in the zero position, if it is longitudinally moved. The zero position is reached if all thefshortened teeth of the intermediate wheels 9; are opposite to the rack bar,- as it is apparent from Fig.- 2, where one intermediate Wheel 9 is shown in section.

'.llie longitudinal movement of the. rack'barinust helniade twice, because theslit 5 in the cover plate 1 is only of half the length of the longitudinal movement of the rack bar. The

move-ment of the rack bar'is caused by lmeans `ofthc adding'pin Vwhich isinserted into the slot 5 and 'pressed Iagainst the. rack b a'r. It

the rack liarlriszreleasedrit tilts downen account of its own weight and under the influ-A ence'of the spring 3'5, while the spiral spring 36 which, as 'best shown in Figs. 2 and 9, is

attached at om` end tothe' raclib'ar 15,`a nd at thcother end'toa pin iid-extending inward from the casing24 brings `it bac-k into its horizontal 4 original position.4 The .rib 37 with the inclined face 37- onthe upper side of the rack ba'r15` (Figs. 2 and 3) serves to tilt up the" rackbar by means of the adding p'in,.which is pressed' toward the face 37', which lies at the right end-of the slit 5. The adding pin being inserted in the slot for this purpose first impingcs against. the inclined face. 3.7' ofthe ib'il', thereby tilting the rack-bar15 backward toward the wall of the casing 24. thereby'ln'itting spring 35 unmeans offthe adding pin so that tlu` Acontrol disks are turned together l with 'the add-- der torsional strain. and then it encounters the shoulder 3i? of the rib 37, whereafter its -1 furthermoremcnt to the left. serves to pushY the rack-bar 1:5 longitudinally'to the left,v

' slide.'

thereby .stretching the spring` 36.

vided. This device' consists, as already nientioned, of numherdisks 7 with holes 8 whichare arranged. over the adding wheels 13.'l The cperation'of theA control disks is eti'ectedY .together with that ofthe addingr wheels 1 3 ing wheels for the saine am0unt5. ...'1fobring the control disks 7baek to the` zero pcsitioln, each control disk 1s provided with a rwatch plates o rpawls angle plate ;16

40 which. are. fixed on an trol-disks 7 are turned forany amount, the spring plates 4l -gear into the. teetlrBS., hold the control disks in this position. To bring the' `controlling consists ot 'a' spindle'1G"revolubly arranged many pinsl 16'.

in the vpath .of'fthe springs. theJ button .lever 'S pressed down Iit turns on .the fulcrurn spindle 16'; The pins 16"?arethus pressed againstthegspring plat-es ItO'and the latter are. disengaged from theratchetteeth '88. The 'controlling disks 7 '-nowturn back to their original positionnnder the influence of the watch 'springs 7 fand the first ratchet tooth strikes against the st opj39 of the intermediate plate 17.' j A By this new addinginachine a quick and easily controllable *calculating is insured. All parts of the machine fruity, it necessary, easily be`1eplacel"tl inan'agenicut is simple and sure. i What we claim is: 1,' An adding machine, .embodying a series of numbering wheels, n scries of transfer wheels intermediatev said numbering wheels and in substantially the same plane' there-A with, an eccentric: projection on cach of said transfcrwhecls, and va Slideharing a part encircling said eccentric .projection and a second part movable into and out of engagemcnt with -an .adjacent numbering wheel 'through eoperationof said eccentrill projection and said 'tirstinetioned part ft the "2.Inian ladding iluachine. a numbering wheel and an -Intermediate transmitting je'xtendin'g radially through one of its teeth, in coi'nbinatio'nwith-.a reciprocating slide arranged loosely in tlie recess and extending into the slot,-'and 'a pin Vswiveled in said tooth and having a groove in line with the ,slot and arrangedto receive thev slide. 3.' In an adding "machine, a; ."number1ng i wheel and anY interme'diate-l transmitting 7' housed i'n a recess. This spring is The ratchet teeth 38 coperate with vspring and raised Aan'dtnrns by' meansl 'of thearin 41l the AWheel arranged in' the' plane of the numbcr- :Qing wheehfprovided with` a recess, and a s lot (Figs. 1 toll) and tend to?" engage -t'ne ratchet teeth 38. When the. con-u disks. "back to .their original' position, a 'device is provided-which 86 on the angle plate 1 6. On thc-spindle 1G' as (Figs. 1 4) are'ixedasthere are, plate ksprings 40.' These pins 16" .are-.f 4 0. If therefore# llO lli

izo

iso

.by one lever transmitting wheel at one` side :ind outer Looms@ Wheel arranged in the plane of the numbering wheel, provided with a recess and a slot extending rediallvl through one of its teeth, in combination with a slide havingl an annuler 'enlargement loosely arranged in the recess and extending' into und through the slot, and an eccentric hub mounted on thev transmittingwheel and engaging trie anniv lar enlarge-menti 4.. An adding machine, embodying a series o numbering wheels each having teeth notch at their crowns, a series of transfer wheels intermediate said numbering wheels, a hub on each of said transfer Wheels, and a slide comprisingY an annular member in cooperative relation with said hub and an g elongated member adapre` lo he por r rit-:l into and retracted outo; the no( in" the teeth of snid numbering hr-els Thixougli co eration of said annular ine-:nr r and sai hub,v

5. In an adding murhin, a series of intr-.rmediate trirnsmittin'v wheels each proiided with a circular ring: i living a recess, in coml bination with a locking device comprising two levers ivotslly connected and a spring to yielding spread the outer arms thereof, the outer arm of one lever arranged to engage'the recees between the teeth of the transmitting wheel abone side and outer ar of the other lever to haar against the n .hed circular ring, ofi the transmitting Wheel on the other side, rind means carried limiting the extent. of spread of said levers.

6. In an adding machine, series of intermediate transmitting wheels each provided, with circular ring having a recess, in com= binetion with a locking .device comprising two levers pivotally connected and a spring to yieldingly spread the outer arms thereof, thelouter arm of one lever arranged to engage the recesses between the teeth of the arm of the other lever to bear againstV the notched circular ring, and :in eccentric stop I mounted in one lever andlbearing against the other to vary the amount-of spread of the levers.

7. In an adding niachine,a series of inter- E mediate transmitting wheels each provided with circular ring having a' recess 'n combination with a locliing device comprising two levers pivotally connected and a spring to yieldingly spread the outer arms thereof,

gage the recesses between the teeli of the l transmitting wheel at one side and ou'reri arm of the other lever to sz-ear against the 2 wheel and havin notched circular ring, and an eccentric stop mounted on one lever and beargngngamst the other to vary the amount o.t spread of the levers, and a spring-actuated vstoplever provided with a. rearwardly extending tallY and an arm connected to theeccentric stop end arranged to raise the tail of the stop lever and diseugage the stop lever from the transmitting wheel, when in the upper position.

8. In an adding machine, a series of toothed numbering wheels each having a double series of numbers in annular form on one face of the wheel, in 'combination with .i

controlling disks 'superimposed on said wheels', each controlling disk. having a sin# gle sexies of numbers thereon, und each of' said controlling disks covering approxi: mately one half of its adjacent numbering apertures therein pvsi` tioned in line wit the gaps between.' udja, cent teeth of the numbering wheel.

9. In an adding machine, a train of'numbex-ing wheels, a portion of said wheelsbeing provided with peripheral teeth, in combination with a pivoted rack-bar-adapted to 11. In an adding machine, a trixiirof numing provided with peripheral teeth, in comL bination with s pivoted rack-baiadapted to mesh with the peripheral teeth in its operative position and arranged to normally 10 drop out of said operative position, the said`4 rackbar being provided with an upper rib, adapted to be pressed by the numbering pin to raise the bar into operative position, and a lower guiding rib. i

In testimony whereof we hereuntol aix our signatures in the presence of two witnesses.

MICHEL BAUM. A JOSEF 'WIM'MER W'inesses ARTHUR V. W. Corrnu, M'Arnrnnn R.

mesh with the peripheral teeth in its opera.; i.

boring wheels, a portion of said wheels bcv 

